<template>
  <view v-if="goods_info.goods_name" class="goods-detail-container">
    <!-- 轮播图区域 -->
    <swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" :circular="true">
      <swiper-item v-for="(item,i) in goods_info.pics" :key="i">
        <image :src="item.pics_big" @click="preview(i)"></image>
      </swiper-item>
    </swiper>

    <!-- 商品信息区域 -->
    <view class="goods-info-box1">
      <!-- 商品价格 -->
      <view class="price">
        ￥{{goods_info.goods_price}}
      </view>
      <!-- 信息主体区域 -->
      <view class="goods-info-body">
        <!-- 商品名称 -->
        <view class="goods-name">
          {{goods_info.goods_name}}
        </view>
        <!-- 收藏 -->
        <view class="favi">
          <uni-icons type="star" size="18" color="grey"></uni-icons>
          <text>收藏</text>
        </view>
      </view>
      <!-- 运费 -->
      <view class="yf">快递：免运费</view>
    </view>

    <!-- 商品详情信息 -->
    <rich-text :nodes="goods_info.goods_introduce"></rich-text>
    <!-- 商品导航组件 -->
    <view class="goods_nav">
      <!-- fill 控制右侧按钮的样式 -->
      <!-- options 左侧按钮的配置项 -->
      <!-- buttonGroup 右侧按钮的配置项 -->
      <!-- click 左侧按钮的点击事件处理函数 -->
      <!-- buttonClick 右侧按钮的点击事件处理函数 -->
      <uni-goods-nav :fill="true" :options="options" :buttonGroup="buttonGroup" @click="onClick" @buttonClick="buttonClick"></uni-goods-nav>
    </view>

  </view>
</template>

<script>
  export default {
    data() {
      return {
        //商品详情对象
        goods_info: {},
        //左侧按钮组的配置对象
        options:[{
          icon:'shop',
          text:'店铺'
        },{
          icon:'cart',
          text:'购物车',
          info:2
        }],
        //右侧按钮组的配置对象
        buttonGroup:[{
          text:'加入购物车',
          backgroundColor:'#ff0000',
          color:'#fff'
        },{
          text:'立即购买',
          backgroundColor:'#ffa200',
          color:'#fff'
        }]
      }
    },
    onLoad(options) {
      //获取商品id
      const goods_id = options.goods_id;
      //调用请求商品详情数据的方法
      this.getGoodsDetail(goods_id);
    },
    methods: {
      //请求商品详情数据
      async getGoodsDetail(goods_id) {
        const {
          data: res
        } = await uni.$http.get('/api/public/v1/goods/detail', {
          goods_id
        });        
        // console.log(res);
        if (res.meta.status !== 200) return uni.$$showMsg()
        //使用字符串的replace方法，为img标签添加行内的style样式，从而解决图片底部空白间隙的问题
        res.message.goods_introduce = res.message.goods_introduce.replace(/<img/g,'<img style="display:block;" ').replace(/webp/g,'jpg');
        //为data 中的数据赋值
        this.goods_info = res.message;
      },
      //实现轮播图的预览效果
      preview(i) {
        //调用uni.previewImage（）方法预览图片
        uni.previewImage({
          //预览时默认显示图片的索引
          current: i,
          //所有图片url地址的数组
          urls: this.goods_info.pics.map(x => x.pics_big)
        })
      },
      onClick(e){
        if(e.content.text === '购物车'){
          uni.switchTab({
            url:'/pages/cart/cart'
          })
        }
      }
    }
  }
</script>

<style>
  swiper {
    height: 750rpx;
  }

  swiper image {
    width: 100%;
    height: 100%;
  }

  .goods-info-box1 {
    padding: 10px;
    padding-right: 0;
  }

  .price {
    color: #c00000;
    font-size: 18px;
    margin: 10px 0;
  }

  .goods-info-body {
    display: flex;
    justify-content: space-between;
  }

  .goods-name {
    font-size: 13px;
    padding-right: 10px;
  }

  /* 收藏区域 */
  .favi {
    width: 120px;
    font-size: 12px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border-left: 1px solid #efefef;
    color: gray;
  }

  /* 运费 */
  .yf {
    margin: 10px 0;
    font-size: 12px;
    color: gray;
  }
  
  .goods-detail-container{
    /* 防止页面内容被底部的商品导航组件遮盖 */
    padding-bottom: 50px ;
  }
  .goods_nav{
    /* 为导航组件添加固定定位 */
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
  }
</style>
